APA (7th ed.) Citation

Lowell, A. (1971). Tendencies in modern American poetry. Octagon Books.

Chicago Style (17th ed.) Citation

Lowell, Amy. Tendencies in Modern American Poetry. New York: Octagon Books, 1971.

MLA (9th ed.) Citation

Lowell, Amy. Tendencies in Modern American Poetry. Octagon Books, 1971.